SO it looks like the head gasket / cracked head issue as raised it's ugly head in my garage. Disappearing coolant, dead cylinder at start up that goes away after a few min, etc. Could be a lot of things but my luck will include pulling the heads.

So if that becomes the case, what is everyone's opinion of the arp head studs in our engines?

Yes I have a Kennedy chip and GM8 turbo, cooling upgrades, main stud girdle, etc.

It had head gaskets replaced under warranty and prior to the mods just before 100k. Has 215k on it now.

Big Green